lovejoy



v@uiten tatrs @strut @titten JAMES u. FERGUSON AND HENRY W. LOVEJOY, OE NEW YORK, N. Y. Letters Patent No. 63,491, dated April 2, 1867.

IMPROVEDl MACHINE FOR TRIMMING METALS.

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TO ALE WHOM Ir MAY OONOERN: y

Be it 4known that we, J. H. FERdUsON and I-I. W. LOVEJOY, of the city, county, and State ot New York, have invented a new and improved Machine for Trimming Metal and other Plates; and we do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled inthe art to make and use the same, 4reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 represents a longitudinal vertical section of this invention.

Figure 2 is a plan or top view of the same.

Figure 8 isa detachedwzside elevation of the clamp which serves to retain the plates to be edged.

Similar letters of reference indicate like parts.

This invention relates to amachine by which the edges of metallic or other plates can be chamfer'ed oi` and the roughness removed, leaving the edges round and smooth. This operation is generally performed by the useV ef a plane worked by hand, the sharp corner of the bevel being removed to prevent injury to the hands of the workmen by a subsequent operation, thus requiring much hand labor and time. In the machine which forms the subject-matter of this invention the plates to be trimmed are secured by suitable clamps on a slide or carriage, which moves in front Ofa revolving cutter-head, and ot" a stationary'linife, in such a manner that by the cutters inthe revolving head one edge after the other of the plate is chamfered oil', and the sharp corner removed by the stationary knife, all by one operation. Y

Arepresentsa circular head, which is mounted on the end of a spindle, E, to which a rapid revolving motion is, imparted by a belt, or any other similar means. In the cutter-head are secured two or more cutters, C, in a suitable position to act on the edgeof the plateto be trimmed. The`spindle B has its bearings'in an adjustablc'head-stock, B. This plate is secured by screw-clamps, D, or any other suitable means, to a slide or carriage, which moves freelyin a groove, a, in the table or platform F. This table is supported by setscrews, l, whereby it can be adjusted to any desired bevel, and itis adjustable towards and from the cutterhead. It is also provided with a gauge, I, which is hinged so that it can be readily turned up out of the way, and which may be made adjustable towards and from the carriage E in any suitable manner. By means of this gauge the plate to be trimmed is adjusted in such a position that the cutters in the revolving head will ehamfer oft` the edge to the desired extent, and the sharp corner formed by this operation is removed by a stationary knife, H, which is secured in the table or platform in the proper position. In order to getthe plate square or to the desired shape, a straight-edge, G, may be applied to one of the clamps, and this straight-edge may be so arranged that it is adjustable to any desired angle.

The 'operation is as follows: After the cutters have been properly adjusted the plate to be operated upon l is placedon the table and properly glauged, the clamps are tightened, and the plate is passed along on the table past the rapidly-revolving cutter-head and the stationary knife. By these means the edge of the plateis. bevelled, and the sharp edge removed at one operation. The clamps secured to the sliding carriag event` the plate moving out of its position, and said plate can be bevelled off with the greatest ease and facility.` I using our machine for stereotype plates we obtain the particular advantage that We can trim the'edges jclose to the body without danger of Acutting away the face of the'type. l

Having thus described our invention, we claim as new, and desire to secure by Letters Patentllhe clamps D and carriage E, in combination with the table F, cutter-head on the adjustable head-stock 1?', and stationary knife H, all constructed and operating substantially as and for thepurpose described.

JAMES H. FERGUSON,

Witnesses: HENRYW. LOVEJOY.

WM. F. MCNAMARA, l ALEX. F. ROBERTS. 

